Hydro-surveys

Downloadable PDF files of current hydrographic surveys for the Tennessee-Tombigbee Waterway are available for download below by clicking on the reach name of the desired survey area. The hydrographic survey files are designed to be printed on 22" x 34" paper (ANSI D).

The Mobile District's Operations Division regularly performs hydrographic surveys to monitor navigation conditions of the federally authorized navigation channels maintained by the District. This data is compiled as Channel Condition Surveys, which are used as decision-making tools for channel maintenance operations.

Note: Because channel conditions can change rapidly, these hydrographic surveys may or may not reflect accurate channel conditions when they are accessed by users of this website. These data files show the results of surveys performed on the dates shown, and can only be considered to indicate the general channel conditions that existed on those dates; therefore, these hydrographic surveys are to be used for informational purposes only. Do not use them as navigational aids.